This is Perl module Statistics::Zscore.
INSTALLATION
Statistics::Zscore installation is straightforward. If your CPAN shell is set up,
you should just be able to do
% cpan Statistics::Zscore
Download it, unpack it, then build it as per the usual:
% perl Makefile.PL
% make && make test
Then install it:
% make install
DOCUMENTATION
Statistics::Zscore documentation is available as in POD. So you can do:
% perldoc Statistics::Zscore
to read the documentation online with your favorite pager.
takeshi miki